Yamaha 2009 YFM25RY, Service Manual

Page: 250 / 293

ELECTRIC STARTING SYSTEM
7-9
EAS27190
TROUBLESHOOTING
The starter motor fails to turn.
TIP
• Before troubleshooting, remove the following part(s):
1. Seat
2. Front panel
3. Front fender
4. Rear fender
5. Side cover
NG
→
OK
↓
NG
→
OK
↓
OK
→
NG
↓
NG
→
OK
↓
NG
→
OK
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NG
→
OK
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NG
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OK
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1. Check the fuse.
Refer to “CHECKING THE FUSES”
on page 7-33. Replace the fuse.
2. Check the battery.
Refer to “CHECKING AND
CHARGING THE BATTERY” on
page 7-33. • Clean the battery terminals.
• Recharge or replace the battery.
3. Check the starter motor operation.
Refer to “CHECKING THE
STARTER MOTOR OPERATION”
on page 7-40.
Starter motor is OK. Perform the elec-
tric starting system troubleshooting,
starting with step 5.
4. Check the starter motor.
Refer to “CHECKING THE
STARTER MOTOR” on page 5-51. Repair or replace the starter motor.
5. Check the starting circuit cut-off
relay.
Refer to “CHECKING THE
RELAYS” on page 7-37. Replace the starting circuit cut-off
relay.
6. Check the diode (starting circuit
cut-off relay).
Refer to “CHECKING THE DIODE”
on page 7-37. Replace the starting circuit cut-off
relay.
7. Check the starter relay.
Refer to “CHECKING THE
RELAYS” on page 7-37. Replace the starter relay.